"It is unlike anything any of us have ever seen”
“I cannot find anything like it in the literature.”
“This rock is obviously something New or at least Unusual.”

                                            American Museum of Natural History

                                            Dept. of Earth and Planetary Sciences

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"Your specimen is nephrite, a variety of jade. To determine
this I looked at a thin section. What makes it unusual is the fact
that it has orbicular structure. “Orbicular” implies that the rock
contains “concentric shells of different texture and/or mineralogy
about a central core.” 

...and afterwards by phone they said their  conclusion of Nephrite was in error and then said “We have never seen this type stone and cannot figure out what it is and where it came from.”

                                                              Smithsonian Institution

                                                 National Museum of Natural History
                                                 Rock and Ore Collection
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"Jadeite, a member of the pyroxene group has the formula: (NA, AL, FE) SI₂ 0₆.
This is a much better fit to your X-ray energy dispersive analysis (EDX) results.
In conclusion I think it is Jadeite, and perhaps the special version Chloromelanite."

                                                Dr. Dave Douglass

                                       Douglass minerals
                                        Retired mineralogical researcher UCLA.

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"It is a fresh and Unusual alkalik volcanic rock predominantly composed of the four minerals Quartz, Anorthoclase, Riebeckite and Aegirine. The light green spherules you see in the stone composed of radiating fibers are Riebeckite needles mantled with fine grained Aegirine. The darker matrix is richer in Riebeckite and also contains more Quartz.”       

                                                     Dr. Sid Williams  

                                                             Consulting Petrographer. Globo De Plomo
                                                            Co-Author of Mineralogy of Arizona
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You may have seen a new lapidary material being offered for sale recently. It's called "Nebula Stone^TM," and is a dark-green, nearly black, shiny material with fascinating, light-green, swirling orbicules scattered through the dark matrix. These inclusions make the rock look like the night sky viewed through a telescope, wherein you see galaxies, nebulae and individual stars scattered against a dark background- hence, the name Nebula Stone.

What makes Nebula Stone so unusual is that it has been analyzed by several noted scientists without anyone coming up with a definitive answer as to what type of rock it actually is. Using a variety of recognized techniques, scientists have studied the rock carefully, yet cannot come to a final, similar conclusion.
"It is highly regarded as an energy stone and healing stone by people who are metaphysically attuned."

  "The stone now enjoyed by the mineralogist, the lapidary and the spiritually inclined alike."